Ore-classifier.



W. W. GUEST.

ORE CLASSIFIER. APPLICATION FILED MAR. 16, 1915.

1,1 78,640. Patented Apr. 11, 1916 2 SHEETS-SHEET 1.

1 ll k! I I WITNESSES; INVENTQR.

- 2 SHEETS-SHEET 2.

' v "mm/ywgwr BY M W F ATTORNEY.)

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WILLIAM W. GUEST, OE ALAMEDA, CALIFORNIA, ASSIGNOR TO THE EULA MININGCGBPQRATION. A COIBPORATION OF ARIZONA.

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Specification of Letters iatent.

Application filed March 16, 1915. Serial No. 14,712.

To all 1c]: 07/: [tmoy/ concern.

lie it known that 1. WILLIAM YV. GUEST, a citizen of'the United States,resldlng at Ahuneda. in the county of Alameda, Stateterms as will enablethose skilled in the art to construct and use the same.

,0 This invention relates to a classifier for finely pulverized ores andits object is to produce two grades of material, that is, a slimeproduct and a sand product.

An object of the invention is to produce a classifier which will becontinuous in action and which will deliver a product at each endthereof as free as possible from the product sought to be eliminated.

An embodiment of the invention is shown in the drawing in which the samereference numeral is applied to the same portion throughout. but I amaware that there are many modifications thereof.

Figure l is a vertical longitudinal sectional view of the classifier,and Fig. 2 is a plan view of the classifier on a plane at right anglesto the operating shafts. the feed trough being omitted.

The machine is supported by suitable legs 1 and 2 at each side thereofand comprises a trough 3 having a discharge opening 4 at one end for theslime and a discharge chute 5 at the other end for the sand. The bottomof the trough has a plurality of steps 6.1 and 8 therein, such a numberof steps being used as is deemed necessary to effect the givenclassification.

Extending across the top of the classifier are four cross bars 10. 11,12 and 13, said cross bars having" suitable bearing boxes 14 formedintegral therewith at the center of the same, each of which bearingboxes is covered by means of a sleeve 15 connected with the severalagitator shafts.

The agitator shafts 1G, 17, 18 and 19 each carries an agitator 20, 21,22, and 23, each agitator having four blades. the arrange ment of theblades on one agitator being reversed from the arrangement on the nextadjacent agitator.

Each agitator shaft is -provided with a horizontal bevel gear 25, whileeach bevel gear is in mesh with a pinion 26, of which there are four onfour shafts 27, 28, 29 and 30. The shafts 27 to 30 are each providedwith a sprocket wheel as-indicated a 31, 32, 33 imam. 1 Each PatentedApr. 11, 1916;.

cross bar is provided with bearings 10: 10.- f

11', 11; 12,'1'2" and 13' and 13" for the several horizontal shafts.

At the upper end of the tank there isa bearing block 35 for a. sprocketwheel 36, while lower down on the side of the tank a sprocket wheel 37is journale d The sprocket wheels are all in the same plane 1.

and av chair 38 passes over the sprocket wheel 36, under the sprocketwheel 34, over the sprocket wheel 33, under the sprocket wheel 32 andover the sprocket Wheel 31, so

that each agitator is reversely rotated from the next adjacent agitator.At the lower end of the tank a plate 39 determines the. height of thewater and thereby determines the product delivered at both ends.

in actual operation the tank is built with such a. number of agitatorsas may be deemed necessary to use ona particular ore to be treated andthe angle at which the trough is set also determines the character ofthe classified product separated from the pulp fed to the tank throughthe trough 40. As the material is fed into'the machine the pulp and oreaccumulate in the tank until the water runs over the plate 39, while atthe same time the agitators are turned slowly to bring any sand that mayaccumulate in the machine up the series of steps and ultimatelydischarge it tln'ough the chute 5, the fine slime remaining insuspension being discharged through the discharge, opening 4.

An advantage of this machine is that the travel of the ore through themachine is con siderably increased over the length of the machine, sincethe ore is worked back and forth by the several agitators therebyeffectively cleaning the sand and removing the slime therefrom.

Having thus dese "hed my invention what I claim as new and desire tosecure by Letters Patent of the United States, is as follows,modifications within the scope of the claims being expressly reserved:

1. An ore classifier comprising a steppe tank having a discharge openingat each end thereof, a plurality of longitudinally arranged agitators insaid tank, the blades of one agitator over and underlapping the bladesof the next two adjacentagitators, means to rotate the agitators todeliver the coarser materials at the upper end of the tank While the.finer materials are allowed chute at an intermediate portion of thetank.

' 3. An ore classifier comprising a stepped tank, having a dischargechute at each end thereof, a plurality of longitudinally arrangedrevoluble agitators having curved overlapping and underlapping bladesadapted to deliver the coarser materials at the upper end of the tankwhile permitting the finer materials to run out the lower end of thetank, and means to reversely rotate said agitators.

4. An ore classifier comprising a tank having an inclined bottom with adischarge outlet at both ends, a feed chute at an intermediate portionof the tank, a series of over lapping and underlapping agitatorsrevoluble in proximity to the bottom of the tank, and means to reverselyrotate the adjacent agitators of the tank.

In testimony whereof I have hereunto set my hand this 9th day of March,1915, in the presence of the two subscribed Witnesses.

WILLIAM \V. GUEST.

